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Table 2 Maximal patellar tendon mechanical properties

From: Load magnitude affects patellar tendon mechanical properties but not collagen or collagen cross-linking after long-term strength training in older adults

  CON (n = 10) MRT (n = 13) HRT (n = 10)
0 mths 12 mths 0 mths 12 mths 0 mths 12 mths
Internal moment arm (cm) 2.75 ± 0.04 2.79 ± 0.04 2.73 ± 0.05
Maximal deformation (mm) 2.7 ± 0.3 2.9 ± 0.2 2.3 ± 0.2 2.7 ± 0.2 2.4 ± 0.3 2.5 ± 0.3
Maximal force (N) ‡‡ 4890 ± 390 5020 ± 330 4070 ± 480 4690 ± 490 5020 ± 530 5550 ± 470
Maximal stiffness (N/mm)** 3530 ± 490 3010 ± 440 3350 ± 300 3170 ± 210 4060 ± 430 4420 ± 340B
Maximal strain (%) 6.0 ± 0.8 6.4 ± 0.5 5.3 ± 0.5 6.1 ± 0.6 5.5 ± 0.6 5.7 ± 0.5
Maximal stress (MPa) 43 ± 3 43 ± 2 33 ± 3 36 ± 3 43 ± 4 45 ± 3
Maximal modulus(MPa)* 1430 ± 2000 1200 ± 180 1180 ± 70 1090 ± 50 1510 ± 150 1560 ± 140
  1. Values are means ±SE. Data analyzed by repeated measures two-way ANOVA with baseline adjustment and Tukey-Kramer post hoc tests
  2. CON control, MRT moderate load resistance training, HRT heavy resistance training
  3. Significant interaction denoted by *(p < 0.05) or **(p < 0.01). Main effect of time denoted by ‡(p < 0.05) or ‡‡(p < 0.01). Post hoc tests: B: significant difference from CON12 (p < 0.05)